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Prealgebra: Operations


Problems

Do the following problems without your calculator, using the properties of multiplication to help you.

Problem : 6×7×5 = ?


Problem : 5×(27×20)


Problem : 6×(2 + 10)


Problem : 5×876×156×7×4×0 = ?


Problem : 5×1×1×4×1 = ?


Problem : (5 + 4)×1 = ?


Which properties of multiplication (Associative, Commutative, Distributive, Identity, Zero Product Property) are used in the following?

Problem : 5×78×0 = 0


Problem : 65×(9 + 10) = (65×9) + (65×10)


Problem : (6×5)×11 = (5×6)×11


Problem : (9×8)×3 = 9×(8×3)


Problem : 52×1 = 52


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